Sh e l l e n bag k



(No Model.)

' Patented Feb. 4, .1896.

I "III -4 Sheets-Sheet. 2. P. SHELLENBA'GK. -IATHE FOR, BORING AND FACING PULLEYS.

Patented Feb. 4, 1896.

\ .llllll R v O ml.

(No Model.)

3 MW e h S m e e h S K C A B N E L L H S n a o M LATHE-FOR BORING AND FACING PULL'BYS. No. 554,147. Patented Feb. 4,

- witmawo (No Modem 4 Sheets-Sheet P. SHELLENBAOK.- LATHE FOR BORING AND P AGING-PULLEYS. N0".' 5 554, 1'47.

" Patent'ed Feb. 4, 1896.

I s enqrrrqnrronf rmm part of Letters wee-m. 554,147, dated rep ile Application filedliievlfi,1895. Seria1No.54=9,432. (NomodelJ whoin it-may concern.-

et Liberty, "inFthfe connty-"of Union t te of Indiana, have invented certain iigidtg;useful Iniprovein atBorgng endFacingPnHe lowing s a specification.

I flrh e Qblect of my lnvention 1s t providea 1 lathe for simultaneously boring and facing '10 pulley'sand'other articles. v

2- is asection on lineman, Fig. 1. Fig. 3 is asectionon line y y Fig'. 1, Fig. 4 is a v centrel vertieal section; Fig.5 is a rear end 5 Fig. ,8 is arearend view showing ainodifi'ed 'fOllill of feeding and driving the boring bar;

rear end "of the boring-bar;

A represents the base'of the ni a thereon. p i

V Bgi'epresents a mandrel; C, a chuck, lli'echnckh is provided with threeraisedportionsainst which the spokes of thepnlley rest p in y s shaft e, and driven "by means Cigar-31181 pon the cone-pulley e; monntedf thereon. W'hen'it is desired to'inr creasethe'speedv-of the mandrel the cone pnlwe ness-1 1 0 by hen, until-the worm passes out of engagen 'ent tlrthe'ini ter-"gear Gr an d throngh spnrl A rive the' nn'l'andrel at an increased EB s' n'n L L E N BA (-1 K on 1 Linen-TY LA-THE:- FoRleo rNefAN'n fF 'oii Ne PU LLELYS.

known' that I, PETERSHELLENBACKH,

ent in Lathes for Figure 1- is a top plan view of the machine;

View of the lnachinei Fig. 6 is a section on line 5 2, Fig; 4. Fig 7 is aicentral verticalv section through one of the toohearriagesi' ,Fig.' 9; isa side elevationof the same. I; Fig. a 10 'ijs adetailed view, partly in section-of; the

. l Q i QJ a is provided Withivays'A, upon which the 2 5 tool-carriage 'andrtail-stock are mounted. I

3 set in slot of the boring-bar .H. i A? represents} head-stock frame mounted ,e ielamped. The jniandrel is" driven I fbymeans of aworm-gea1D,splined. to the mandrelwandgeared to aworm E;

meritvitiithlthe ivorm wheel '1 as shown in Fig. 6 when goiter-gear F comes into'engage ft; 1:l\I-iter:gear G is held in engagement with the miter "Flyby means 0t ascrew-"stnd' lig the screivfl, and the rniter slips asiszm'secondary mandrel H, to the forwardendof which" is secured Ta 110 ng erHtbyi means of the pin 72-, the opposite endfof Rhe boring-barbeingsupported in t-hefteilstecli I51 5 5 In order to provide al suitehleispeed fo -tithe mandrel H, which byreasonrof:rwiorking eaizi v the'center of the pnll'eymn's'tkbe faster than; 1 thatof thetools workin enethe-fe pulley, a, series of gears lfl' are ey to the sleeve '4, which is elalnpedito;the'lreanend of the mandrel by m'e ans of the 'groqvedicol-xg la-r 5. This sleeve i is ij1- -tni'n;keyed: :'t he1 mandrel H, and the 'sleeveiendmandre driven by zv'train of gears 617-":81irornig' the gear G'lieing monntedynpon -itheastnd and; meshing witlrthe "gear d; from Qnhicli t receives motion and drives ean-T n 3011' shaft V a, 1

9, which journals; in I an -adjustalile segment 10,- mounted upon stnd 1.1;: dllponr-gthetstndifis' 0 is likewise keyed the gear "Yhielivh mea sis of the adj nstable segnient l o-xnray'be engagedwith either one of the'ge'a'rsl 2f 3,g'ean 8kbeing L5 splined on shaft 9; so as to bemoved late-rallfi'li itoengage either ofisaidg'eers-x iilllie tool for; 7 5

turning out the inner periphery ofitth mometo make a, coniple'tefirevolntion f the boring-bar between 1theinterinittentFlat-i era-I "feed-motion I provide "'theifollotving dea 8o vices'z J J 1 represent eama'disks npomsleevei 4. K represents a pendent 'nrlm'pivotedetoy thefhead-stock A and provided fricti-enroller k, riding 'upon"the eam disk JiJhy represents a disk provided,. th-aserrated 85 'face and a scre'iv-th'readedliubv engagingwith the mandrel H. The fhub is vireoessed atits forward end, so as to sliprover the'endoti the 1 sleeve i and is held in position by aiseriesio'f' stud-b0 ts 1, which'enga-ge with a" grooveing 0 the end ofthe sleeve 4. i The operationis "as follows :2 hen event e: friction-roller K drops into the grooveiinrithe 5; 11 face ofa the cam-disks "J' J; thesoiiteryendr iof= the arm K is allowedto drop; so as toienigagekg 5 the teeth of disk L, thus ,hold'ing the dis L-e stationary during thepassa ge ofii the e roller over the depressed surfgt'ees be I a! disks J J As themandrel is henigc tinuously rotated, wheneven 1-100 held stationary the innndrelm tlnfisigkfor l ward-to make the feed by niea-nsl'of its ena gageinent with the hub of .the disk As 1 T soon as the arm Ki is liftedmit f= (engage Jil i ment with the disk thedisk travels with the mandrel H until it is again engaged by the arm K, which-is at the end of the revolucrease or decrease the time of engagement of.

the pendent arm K and, hence the amount of lateral feed.

In order to turn off the face of the pulleycrowning, I provide two tool-holders, one upon each side of the machine and'so arranged as to travel in opposite directions. These toolfholders are driven in the following manner: )1 represents a cone-pulley upon the shaft e,

shaft 6, and a belt upon cone-pulley 'e.

from which motion is transmitted to' conepulley N upon shaft n by means of a belt m, this shaft being supported in-brackets N. 0 represents worm-wheels mounted upon shaft 0. P represents a friction-clutch, which is engaged and disengaged with the Worm-wheel O by means of nut 19. The shaft 0 is supported in collar R, clamped to the pedestal r of the tool-carriage. The tool is-reciprocated backward and forward by means of the mitergears 12 1-3 14 15 and spur-gears 16 17. The spur-gear 17 is splined upon screw-shaft 25, wliich engages with a nut on the base of the tool carriage 26. The pedestal '1' may be shifted to or from the center line of the lathe upon dovetail-"1" and clamped in position. The rails S swivel upon the pedestal r, so that the tool may be swung to any convenient position to adapt itself to various angles of work.

The worm E is inclosed in an oil box or housing 20in order .to properly lubricate the worm. This housing is clamped in position by means of the thrust-collars 21 22, which pass through the head-stock frame and enter recesses in the housing 20. 23 represents a thrust-collar against which the worm seats when in operation.

Mode of operation: The pulley is placed in position upon the face of the chuck C and a suitable tool is inserted in the boring-bar.

The segment 10 and gear 8 are adjusted to give the mandrel H the desired speed; The tools upon the carriage 26 are set and the friction-clutches P clamped to the worm-gears O. which sets the tool-carriage in motion. If a slow speed is desired for the pulley the mandrel B is driven by means'of-the worm E, If it is desired to give the work a high speed the worm E is disengaged from the worm-wheel, as shown in Fig. 6-, and power is transmitted to the mandrel through shaft e, miter-gears F G and spur-gears g d. If it is desired to face the hub or rim of the pulley the rails may be turned so that the carriage 26 will travel at right angles to the axis of the pulley. This can be accomplished because the the pedestal 7'.

being-adjusted to bring the gear 8 into enmiters 1213 14' 15 will form an axis for the rails S, the heads of the bolts 3i being set in the annular T-groove'formed the face of The mandrel in this case may be idle by disengagementof the gear 8, the mandrel B being revolved to drive the pulley-chuck. It is often desirable to have a continuous feed of the boring-bar-instead of 7 the intermittent feed shown in Figs. 1 2 and 3, and this I accomplish by means of the'following device s: 40v represents a spur-gear upon shaft 41, journaled to the frame A at one end and to the bracket 42 at the opposite'end and driven from gear (Z.

outer end of the boring-bar H. 49 50 represent friction-clutch and knurl for engaging So This shaft carries the worm 43 driving the worm-wheelilupon shaft45, likewise .journaled in bracket 42.

and disengaging the worm-wheel ii with the worm 43. The boring-bar H may thus be fed with a continuous feed and engaged or dis" engaged at will. 51 represents a crank-arm for feeding the same by hand when desired, these parts being substituted for the arm'K; disks J J L, and screw-thread on mandrelfighli.

It is frequentlymore advantageous to drive the mandrel H by means of separate pulleys.

than from the main driving-pulley, as shown in Figs. 1 and 5. In order to accomplish this the frame A and to which the spur-gear 53 and beveled gear 54 are journaled upon the shaft 55. carrying the gear 8 which meshes with the gear 53, the segment carrying .the gear 8 gagement with either of the gears 1 2 3, as desired; while it still remains in engagement with the gear 57 represents a shaft-likewise journaled in the bracket 5:? and provided purpose I provide a bracket-arm 52 secured to 56 represents a segmental arm at one end with the beveled gear 58 meshing no with the beveled gear 5i and at the opposite end with tight and loose pulleys 59 60, whereby the mandrel may be driven by separate. belts from the rear end of the'lathe.

I obtain several advantages by the'constru r1 5 tion herein shown and described.

First. The range ofspeed at which the chuck and mandrel may be driven is such that by employing two different driving-gears'-.-- to wit, the worm-gears and the spur-gearsr very small or large pulleys can be dressed on the'one machine.

Second. The range of feedand speed for moving the tool-carriages and the mandrel is likewise great enough to accommodate itself to the different classes of work. 7 j Third. Pulleys, cones, cylinders and. other similar articles may be dressed to any de sired angle by the adjustment of the railsS.

Fourth. By employing gears for drivingthe mandrel H and boring-bar at dilferent ranges of speed the work' can be done very fast on small articles or correspondingly sloweron larger articles.

Fifth. By employing two swiveling toolrails S the two planes of crownin g-pulleys can I be dressedsimultaneously.

Sixth. By means of the driving-gears the mandrel H can be driven at any desired vary ing speed in an opposite direction from the travel of the mandrel B.-

I claim-- 1. In a machine for dressing pulleys, the combination with a'mandrel and a chuck, of the alternatingdriving mechanism consisting of a worm-gear D splined on the mandrel, the driven shaft 6, the worm E mounted on said. shaft and adapted to be thrown into and out of engagement with said worm -gear, a beveled gear F rigidly mounted on the shaft 2, and a a corresponding beveled gear G adapted to be engaged and disengaged by the gear F, and

a train of spur-gears driven by said beveled gears and operating to drive the mandrel when the worm is thrown out of gear with the wormgear, substantially as described.

2. In a machine for dressingpulleys, the combination with a mandrel and a chuck, of the alternating driving mechanism consisting of a worm-gear D splined on the mandrel, the driven shaft e, the worm E mounted on said shaft and adapted to be thrown into and'out of engagement with said worm-gear, a beveled gear F rigidlymount'ed on the shaft e, a shaft longitudinally adjustable in bearings at a right angle to the shaft e, a beveled gear G carried by said shaft and adapted to be thrown into and out of engagement with thei beveled gear F. and spurzgearing actuated by shaft and operating to drive the mandrel whenthe worm is thrown out of gear with thewormgear, substantially as described.

3. In a machine for dressing pulleys, the combination with a mandrel anda chuck, of

the alternating driving mechanism consisting of a worm-gear D splined on the mandrel, the

longitudinally-adjustable driven shaft 6, the worm E mounted on said shaft, mechanism the mandrelwhen the worm is thrown out of gear with the'worm-gear, substantially as described.

4. In, a machine for dressing pulleys, the 5-5 combination with a hollow mandrel B carrying a chuck;of the mandrel H centrally arranged within the mandrel B and carrying a boringbar H, a sleeve 4 splined on the mandrel H,

a series of transmitting-gears splined upon .60

said sleeve and operating to drive the mandrel H at varying speeds, and mechanism for feeding said mandrel H forward at varying speeds,

substantially as described. a

5. In a machine for dressing pulleys in combination with the inner mandrel H, the sleeve 4 splined thereto, one or-more gears splined upon said sleeve, and the intermittent feed ing device consisting of the disk nut L, cam

J, and arm K, substantially as specified. 7o

6. Ina machine for dressing pulleys, the

combination with the screw-threaded mandrel H, the sleeve 4 splined thereto, one or more gears splined upon said sleeve, and the intermittent feeding device consisting of the disk nut L, the cam-disks J J, adjustably connected to each other and one of which is secured to said sleeve, and the arm K in engagement with said canrdisks and operated PETER SHELLEXBACK. 

